River Dun
13 fish species have been recorded at 4 locations along the River Dun.
- Fish species
- 13
- Places surveyed
- 4
- Survey visits
- 12
- Records span
- 2006–2025
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| Brown / sea troutSalmo trutta | 4 | 2025 | 698 | Median: 20.1 cm698 fish measuredLargest measured brown / sea trout: 51.8 cm | — |
| BullheadCottus gobio | 4 | 2025 | 362 | Median: 4.3 cm19 fish measuredLargest measured bullhead: 8.2 cm | — |
| GudgeonGobio gobio | 4 | 2025 | 18 | Median: 12.2 cm18 fish measuredLargest measured gudgeon: 18.6 cm | — |
| GraylingThymallus thymallus | 3 | 2025 | 225 | Median: 17 cm225 fish measuredLargest measured grayling: 42.9 cm | — |
| DaceLeuciscus leuciscus | 3 | 2025 | 65 | Median: 13 cm65 fish measuredLargest measured dace: 26.1 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 3 | 2025 | 6 | — | — |
| PikeEsox lucius | 3 | 2025 | 22 | Median: 35.1 cm22 fish measuredLargest measured pike: 70 cm | — |
| RoachRutilus rutilus | 3 | 2025 | 47 | Median: 21.4 cm47 fish measuredLargest measured roach: 30.7 cm | — |
| Brook lampreyLampetra planeri | 2 | 2024 | 3 | — | — |
| MinnowPhoxinus phoxinus | 2 | 2025 | 18 | — | — |
| PerchPerca fluviatilis | 2 | 2023 | 5 | Median: 23.3 cm5 fish measuredLargest measured perch: 28.6 cm | — |
| ChubLeuciscus cephalus | 2 | 2024 | 3 | Median: 36.7 cm3 fish measuredLargest measured chub: 37 cm | — |
| Stone loachBarbatula barbatula | 1 | 2025 | 12 | — | — |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Dun. Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →